Hc150 / Hc101 Ma; Meaning Of Two-Colour Led - aqua HC150 Serie Manuel De Service Et D'entretien

HC150 / HC101
Solenoid driven dosing pump

3.2 HC150 / HC101 mA

The pump can operate in constant mode or in proportional current mode (mA).
In constant mode it operates like model HC150 costant, whereas in proportional mode mA, the number of impulses
is proportional to the current signal connected to the BNC - red connector.
Using the regulating knob it is possible to set the maximum flow of the pump associated to the maximum input
current value, i.e. 20 mA.
After which the pump will dose proportionally between 4 and 20 mA, as shown in the graph provided below:
In proportional current mode it is also possible to use one of the two pump operating scales, as in the constant
version.
The HC150 mA pumps can be piloted, for proportional dosing, from any regulating instrument that is capable of
providing a current signal between 4-20mA (ex.: pH-metres, redox meters, residual chlorine meters, conductivity
meters etc.)
This signal must be applied to a cable with a BNC - red pump connector, being careful of the polarity:
 Centre wire: positive.
 Sheath: negative.

3.2.1 Meaning of two-colour LED

The colour of the LED immediately indicates the type of proportional pump operation, in fact:
 Green LED: the HC150 mA pump is in constant mode
 Orange LED: the HC150 mA pump is in proportional mode
Below is a table of LED operation:
Colour of the
LED
Orange
Orange
Red
Red
Orange
Red
Green
ADSP9500090
Status of the Position of the
LED regulating knob
Flashing Different from 0%
Flashing 0%
Steady Different from 0%
Flashing Different from 0%
Steady Different from 0%
Steady
Different from 0%
Flashing
Rev.2.5 09.09.2015
PROGRAMMING THE PUMPS
Operating status of the pump
ON – injection with each flash of the
LED
OFF – Signals the scale
Quick flashing: 0÷100%
Slow flashing: 0÷20%.
OFF – level alarm
OFF – temperature alarm
OFF – input current <= 4 mA
ON – input current >20 mA
ENGLISH
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